public static AsyncDemo Show()
{
var window = instance as Window;
if (window == null)
window = instance = new AsyncDemo();
window.Show();
window.Focus();
return instance;
}
public static AsyncDemo Show()
{
var window = instance as Window;
if (window == null)
{
window = instance = new AsyncDemo();
}
window.Show();
window.Focus();
return(instance);
}
protected override void OnClosed(EventArgs e)
{
base.OnClosed(e);
instance = null;
}
private void Button_Click(object sender, RoutedEventArgs e)
{
AsyncDemo.Show();
}
protected override void OnClosed(EventArgs e)
{
base.OnClosed(e);
instance = null;
}